Regenerative heating apparatus



March 5, 1929. J. VAN ACKEREN 1,704,635

RGENERATIVE HEATING APPARATUS Filed Jan. 6, 1922 5 SheetswSheet 1 March 5, 1929. J. VAN ACKEREN REGENERATIVE HEATING APPARATUS 5 Sheets-Sheet Filed Jan. 6. 1922 Wm vF2 0677757".- QY/Zy March 5, 1929. V ACKEREN 1,704,685

REGBNERATI VE HEAT I NG APPARATUS Filed Jan. 6, 1922 5 Sheets-She et 3 J y a iZZ/67Z757": 5637727111717 e672" Z i Qjfl:

March 5, 1929. J. VAN ACKEREN REGENERATIVE HEATING APPARATUS Filed Jan. 6. 1922 5 Sheets-Sheet Q bkowg R mFQ NNB W N 9% Emm w g Q 2 March 5, 1929. J VAN ACKEREN 1,704,685

REGENERATIVE HEATING APPARATUS Filed Jan; 6, 1922 5 Sheets-Sheet 5 in its construction two series of distilling chambers, such as the series 1.1 and 12 of vertically elongated retorts or coking chainbers, e retorts of each series being contiguous if: intermediate heating walls arranged in two series 13 and 14 corresponding to the respective series of retorts ll, 12. The heating walls and the retort chambers extend to a great hei ht as compared with their respective witths and the other crosswise dimensions of the retort battery, and the two series of rctorts with their corresponding intermediate heating walls are, according to the present embodiment of the invention, respectively arranged and extend along the opposite sides of the central longitudinal. vertical plane of the battery assembly, so as to provide an enclosed space intermediate the opposite sides of the battery for the regenerators, as will hereinafter appear. The heating walls 13, ll form the side walls of the respective rctorts ll. 12, as shown. and the outer ends of the respective retortst as well as the heating walls are reinforced by side refractory Walls designated generally hy the reference characters 15. Between the oppositely facing inner ends of the series of retorts 11, 12 and heating walls 13, i l is located a mediate chaniherhirul wall structure l6 employed for the rc cnorators and other parts hereinafter descrioed.

As shown in Fig' 3, the retro of the two series 11 and 12 may he respectively grouped into pairs K and l. and the healin r walls of the series 13 and 14 may be arranged in groups M and N of three heating walls. corresponding to the pairs of retorts h and L of the series ll and 12. This arrangement permits the location of a relatively thick transverse wall 17 between each pair of retorts and its corresponding group of heat ing Walls. with the result that ample space is provided for handling of the material carbonized in the retorts of the battery.

The coal to he coked is contained in coal hoppers l8. l9 corrcspmiding to the series ll. 12 of rotorts. and supported Ly the HlPEl" rdl'llt'llil All of the r tort battery. Thea: coal hoppor;- dist-harm into coal chutes 21 and the lower ends of which communicat n'llll harging hole 23. 24 in the upper ends ot the rr-torts ot' the series ll. 1;. The discharge of coal l'rom tllv several hoppers may he r'unll'ollcl by manuall opcratrd roudiinod gain and regulating valves .25 individual lo the respective chutes 21.22 and inter m d betw en said chutes and the hoppers 18;, ll ahovc them; The finished cold is discharged through discharge openings 26 at the bottom ot the retorts l1, 12. In order, to facilitate discharge of the coke from said retorts, the side walls of the latter diverge toward the bottom, shown more particularly in Fig. 1. Because of the great llfiltflll. of the retorts as compared with their width and crosswise dimension, the retort hat tery preferably employed as a continuous vertical retort. \Vhen so employed, a con tinuous feed of material is maintained through the retorts 11 and .12, with continuous discharge of the fin lied coke from the bottoms of said retorts into discharge chutes 27 individual to the retorts ll, 12. In the upper portion of the ch utes 27, the coke is quenched hv Water supplied from the water pipe 28 and pipe connections 29 individual to the several chutes 27, the steam produced from the quenching operation being allowed to pass upwardly through the open discharge outlets 26 at the bottoms of the rctorts 11, 12 and through the mass of forming coke in said retorts. The introduction of this steam into the retorts permits the continu us n1ain tcnance of a water gas reaction in the forming coke, with the result that the gas yield from the retorts ll. 12 improved. In. discharging through the chutes 27, the coke is guided by pivoted aprons 30 into the path of rotary disrhargers 31 which insure subslautiallv continuous movement of the linished coke through the chutes 27. From the bottoms ot' the chutes '27, the coke may be discharged at "ill through manuallymontrolled gates 32 on to inclined coke wharvcs ill. there living an inclined Wharf rorre- 5 spondiug to ach series oi retorts ll and 12. The wharv es i'lil converge downwardly. as shown in.l*ig. :2. toward an intermediate colic onveyor 31 and the discl'iarge from the wharvos 1 25 on to the conveycr 34 may be controlled by the individual pivoted gates 35 operated liy slides 36.

The heat for coking the charges of coal in the several rctoris ll. 12 is derived from the heating \\':ill.-: ll 14 corresponding to said :rtorts. llaiih heating wall 13. H is const'n tul e-d of a plurality oi vertical combustion liner; ll? that :iro operativcl v disposed into single groups in their re pective heating Wd h. That is to say. all of the heating illl(l of" each heating wall operate concurrrntly for flow in the same direction; in fact the flow i in the san'io dir ction durlllgf a rev rsal period throughout the entire system of luvs of the hattorv.

Thrrcgeucrators Zlt' tlltl llltfill'pt 'ated in the toro mentioned internal strurturc it). .is awn in Fig. 33. the several I'cgonorators oi the liatlcry are strlu-lurally disposed in a .-lll;j'lt serie with walls ill) of suhslanliallv equal width holween every contiguous pair of ogcncmiors throughout the entire series. Uperatiwl v. however. the rcgencrators are disposed in two groups R and S. cat-h group comprising pairs of adjacent regenerators .-.hich ultrrnalc with pairs of the other group. \Yhen the pairs of rcgenerators conililltll'i;f the group R are operating for inliow, that is to say for delivering preheated media to the fines of the heating walls, the

lUll

pairs of regenerators of the other group S are operating. for outflow .to extract heat from the waste gases discharged from the -fluz-s. On reversal of the battery, at the end of an operating period determined by practice, the inflow regenerators become outflow regeneratbrs and the outflow regenerators. become inflow regenerators. Each regcnerator 38 is preferably ;a high narrow upright chamber containing open brick-' work, commonly called checkerworlt and in-' dicated at 39", with a sole channel 40 underneath such checkerwork, the channels forming the soles of such chambers and opening up into the checke'rwork. The several rc-' generators are heated, by the hot combua .tion products that are exhausted from the flame or combustion tlues hereinbefore mentioned and then, upon reversal, impart such heat to. the medium that they feed into these flame flues. t

In the operation of the battery, the several pairs of regenerators constituting the group R, when in.inflow operation, deliver air and fuel gas to the flame flues during the period when the latter are operating'for upflow combustion; these regenerators receive the exhaust gases from the flame .lues

after reversal, that is to say, during the riod when the flame fines are operating or ddwnflow combustion, On the other hand, the-pairs of regenerators constituting the group S operate for inflow of air and fuel gas to deliver the same to the tines when the latter are operating for downflow combustion, and the said regent-raters S operate for outflow to receive the exhaust gases from the flucs during the period when thelatter are operating for upflow combustion. This method of operation requires the regenerators R to be connected with the lower ends of thextlarne Hues 37 and the regenerators S to lie-connected with the upper ends of said flame flues. The several pairs of regenerators of each group R and S are constitutedof air regenerat-ors A and gas regenerators P, when operating for inflow, and both re.- gcne'rators of the pairs of each group are constituted of waste gas regenerators WV, when operating for outflow. 'H() W(V8I', the several rcgencrators R operate for inflow while-at the same time the several 'rcgenen ators S operate for outflow and, on reversal I of theflow through the flame lines, the sev- 'eral rcgenerators S are switched to the infimcfunction while concurrently the several i-egencrators R are S\ iCll(ll.l0 the'outflow function.

.As shown. the several regnmerators A of the group R communicate at their upper ends by po'rts 4i with horizontal feed channels 42, the latter leading to vertical teed -channcls.43 which comnmnicate. at theirlower ends, with horizonial channel -14. The said horizontal channel-:44 extend he;

.the waste gas tunnel 57 The How neath the groups of flags 37 of both series '13, 14 of heating walls and are connected with the individual fines b ports 45. As shown in Fig. 3, the upper iorizontal channels 42 of several rcgenerators A may be interconnected, such interconnection promoting equality in distribution of the flow through the regeneratorsand flame lines. The regeneralors P of 'the groups R also communicate by ports 46 with horizontal channels 47 leading to vertical channels that are connected at their lower ends with horizontal channels 49 also extended beneath the flame flues 37 of both series 13, 14 and communicably connected with individual flues by ports 50.

The regenerators A of the group S are communicably connectedat their upper ends by ports 51 with horizontal channels 52, there being a pair of such horizontal channels connected at each end of each regenerator, whereby each such regenerator A may have flow connections with the upper ends of the flues of pairs of adjacent heating walls longitudinal central plane of the bpttery. The horizontal channels 52 connect with the individual flues through ports 53. The regencrators P of the roup S are also communicably connected iy ports 54-with airs of horizontal channels 55 leading on sides of the longitudinal central plane of the battery to the pairs of heating walls on the opposite sides of said longitudinal plane and connected with the individual fluesof said heating Walls by means of ducts 56. \Vith this construction, the regenerators P and A of the group S have flow connections with the upper ends of all of the ndividual flues ot' the retort battery.

Extending longitudinally of the- )attery oth.

is a waste gas tunnel .57, said wa ste gas tun-- waste gas stack. 58. connect the sole channels of regenerators individually with boxes 58 are provided with valves 59 for controlling the flow between the individual regeneratqrs and the waste 59 of all of the regenerators of the group S are open, while concurrently the .valves 59 of all of the rcgencratoi's oi the, grou R are c losed.- On reversal valves 59 of the roup R of re onerators. are opch and the corw ponding va ves of the both groups R and, 61) which when op'ened permits air to flow into the rcgenerator. Thc scries 2) air lids 60 of the rcgencrators of the groups R and S arcopencd in alternation. whcrebv all the regcnerators A of the group R operate concurrently for inflow of air during one re- \(I fll period and thereafter, during the next reversal period the 'regenerators A of the gas'tunnel 57. The valves' of the battery the" 120. group S'arc closed. Each regenerator A of S 18 provided with a'lid group S operate for inflow of air, while the regenerators A of the group R are-operating for outflow of the waste gases.

A fuel main 61 extends longitudinally of the battery and is provided with individual valve connections 62 to the several regencratorsl of both groups It and S. In the operation of the battery the valve connections of the regcnerators P of the group R are operated in unison to permit the How of fuel gas into said rcgenerators from the main 61, while the valve connections 62 of the regencrators I of the group S are closed to shut oil the supply of fuel gas, On reversal of the battery the valve connections 62 are operated to permit the supply of gas into the reg nt-raters P of the group S and concurrently to cut oil the supply of gas from the regreneratois l ol the group b,

The operation of the retort battery, assnnr ing that a relatively lean or dilute gas, such as ordinary producer gas is employed as the fuel in the h ating walls as follows: If the several regruerators comprising: the group ll be opcratinu l'or inllow, and the llllts throughout the battery be operating for upt'low, it t'ollows that during this period of operation the regenerators I the group l are employed for preheating the fuel gas which is subsetpiently introtlluccd into the fines. The regent-raters A are employed for preheating the air to support the combustion of the gas in the tines. joncurrently,

all the regenerators of the group operate for outflow. The air and .tuel gas passes upwardly through the regenerators A and l of thc group ll. thence into the horizontal channels -12 and to, thence downwardly through the vertical channels 13 and 48 into the horizontal channels 44 and 49, from which the air and fuel gas pass through the ports 4:3 and 50 into the fines 37 oi both series 13, 14 of heating walls. The waste gases from the fines exhaust through the top horizontal channels 52 and into the several regenerators of the group S and pass down wardly through the rte-generators S and. through the open flow boxes 58 of such regenerators into the waste gas tunnel 57. On reversal of the battery, the regenerators A and P of the group S deliver the air and fuel through the pairs of channels 52 and 55 into the tops of the several flame tlues 37 and the waste gases from said tines exhaust; from the bottom thereof into the channels 44, 49, 43 and 48 and thence through the horizontal channels 42 and 47 into the tops of the regenerators of the group R. Flowing downwardly through said regenerators, the

waste gases ultimately pass through their open flow boxes 58 into the waste gas tunnel 57.

The by-products and distillate gases from the several retorts or coking chambers of both series 11, 12 pass out, of the tops of the said I'etorts through ascension pipes (ll, individual to the respective retorts of th series l1, 12. These ascension pipes carry the distillate and by-products to a commo-i collecting main 66, through which the di tillate and by-products may pass to the usual Irv-product recovery apparatus. In the construction of the battery, the expansion joints, such as the joints 53, may be located in vertical planes and remotely from the heating walls, with the result that leakages or short circuitin; of the tlow of the various media are avoided.

is shown more especially in Figs. 2 and 3 ol' the drawings, the regeneralors, which extend from top to bottom of the structure and havingtheir horizontal levels coinciding with s milar horizontal levels of the alternat in retorts or coking chambers and heating walls, are disposed in a longitutilinal row located in the interior of the battery structure, whereas the alternate retorts and heatilrg' walls are located in longitudinal rows at the opposite sides of the battery structure. This arrangement is prmlumive of importaut advantages in practice. among which may be mentioned the fact that the outside ends of the rctorts and heating walls coincide, according to the present embodiment of the invention with the opposite side walls of the battery structure, thereby rendering the heating walls and retorts directly accessible from such longitudinal side Willis for regulatory, repair, and other purposes, 1

The invention as hereinabove set. forth may he variously embodied within the scope of the claims hereinafter made.

I claim:

1. In a vertical retort battery, in combination: a plurality of high narrow retort chambers, each receiving through its top the charge to be coked and discharging through llr-X bottom the coked charge; heating walls alternating with the retort chambers and respectively constituted of vertical UOI1lbiotion lines operable in unison for uptlow and downtlow combustion in alternation; two groups of high narrow regenerators dis posed at the same level in. a different region of the battery from the heating walls. one group operating for inflow during uptlow combustion of the tlues and the other group operating for intiow during the alternate downtlow combustion of the thirst each group of said regencrators comprising air and fuel gas rcgcnerators: and flow connections bet ween the first mentioned group of re cn ratoi-s and th bottoms oi the lines. and flow connections between the second mentioned group ot'reucncrators and the tops of the tin s; substautiallv a sprciliedl 2. In a vertical retort battery, in com binatiou: a plurality of hi -ch narrow retort chamber each receiving tlliot gli i s top the charge to be cokccl lllti discharging ferent region of the battery from the heating walls, one group operatin for inflow durin upflow combustion of t e fines and the'ot or group operating for inflow during the alternate downflow combustion of the fines; and flow connections between the first mentioned group of regenerators and the bottoms of the fines, and flow connections between the second mentioned group of regenerators and the tops of the fines; substantially as specified.

- In a vertical retort battery, in combination: a plurality of high narrow retort chambers, each receiving through its top the charge to be coked and discharging through its bottom the coked charge; heating walls alternating with the retort chambers and respectively constituted of vertical combustion flues operable in unison for upflow and downflow combustion in alternation; and two groups of high narrow regenerators disposed at the same 'levelin a dilferent region of the battery from the heating walls, one group bein connected with the bottom of the flues, an the other group bein con nected with the tops of ,the fines; su stantially as specified.

4. In a vertical retort battery, in combination: a plurality of retort chambers; heating walls-alternating with the retort chambers and res ecti'vely constituted of vertical combustion ues operable in unison for upflow and downflow combustion in alternation; two groups of regenerators disposed at the same level in a different region of the battery from the heating walls, one group operatin for inflow during upfiow combustioncoi t e flues and the other group operating for inflow during the alternate downflow combustion of the fines, each group of said regenerators comprising air and fuel gas regenerators; and flow com'iections be tween the first mentioned group of regeneratox's and the bottoms of the fines, and flow connections between the second mentioned group of regcncrators' and the tops of the flues; substantially as specified.

5. In a vertical retort battery, in combination: a plurality-of retort chambers heating walls alternating with the retort chambers and respectively constituted of vertical combustion fines operablein unison for up flow and .downfiow combustion in alternation; two groups of regenerators one altor nately disposed with the other and one group operatin for inflow during upflow combustion of t ethics and the other group operating for inflow during the alternate downflow combustion of the fines; and flow connections between the first mentioned grou of re enerators and the bottoms of the ues, an flow connections between the second mentioned group of regenerators and Eh?! tops of the tines; substantially as speci- 6. In a vertical retort battery, in combination: two series of high narrow retort chambers respectively disposed along the opposite sides of the batter each chamber receiving through its top the charge to be co'ked and disohar ing through its bottom the coked charge; eating walls contiguous to such retort chambers and respectively constituted of combustion fines alternately operable in unison for either an upflow or downflow combustion. two roups of high narrow regenerators disposed in the interior of the battery between the two series of retort chambers, one operating for inflow during upflow combustion of the flues and the other group operating for inflow during the alternate downflow combustion of the fines, each group of said regenerators comprising an and fuel gas regenerators; and flow connections between the first mentioned girl-on of regenerators and the bottoms of t 0 second mentioned group of regenerators and E113 tops of the fines; substantially as speci- 7. In a vertical retort battery, in combination: two series of high narrow retort chambers respectively disposed along the nes, and flow connections between the receiving through its top the charge to be coked and discharging through its bottom the coked charge; heating walls contiguous to such retort chambers and respectively constituted of combustion flues alternately operable in unison for either an upfiow or dowriflow combustion; two groups of high narrow regencrators disposed in the interior of the battery between the two'series of retort chambers, one operating for inflow during upflow combustion of the fines and the other group operating for inflow during the alternate downtlow combustion of the flues. and flow connections between the first mentioned group of rcgenerators and the bottoms of the fines, and how connections between the second mentioned regcnerators and the tops of the ues; substantially as specified. a

8. In a vertical retort battery, in combinaoup of 4 tion: two series of retort chambers respec-' tively disposed along the opposite sides of bustion; two groups of regenerators (lisposed in the interior of the battery between" the two series of retort chambers, one operating for inflow during upi'low combustion of the lines and the other group operating for inflow during the alternate downflow combustion of the flues; and flow connections between the first mentioned group of regenerators and the bottoms of the fines, and flow connections between the second mentioned group of regenerators and the tops of the tines; substantially as specified.

9. A battery strllcture for distil ing carbonaceous materials having; high narrow distilling chambers attenuated in horizontal s ction and lined heating walls alternating with said distilling, chambers, the walls and chambers being disposed in series along the opposite sides of the battery structure, combined with high narrow rcgenerators dis posed in the interior of the structure and between the opposite series of said dist1lling chambers and heating walls; substantially as specified.

10. A battery structure for distilling carbonaceous materials having distilling chambers attenuated in horizontal section and fined heating walls contiguous to said distilling chambers. the walls and chambers being disposed in series along the opposite sides of the battery structure, combined with regenerators disposed in the interior of the $truc-- ture and between the opposite series of said distilling chambers and heating walls; substantially as specified.

11. A vertical retort battery having series of retort chambers attenuated in horizontal section and continuous flued heating walls disposed along the opposite sides of the batterv structure, combined with two groups of reg enerators disposed in the interior ot the battery structure between the two SM'ltK- ot such retorts and the heating walls. one group of said regencrators being cominlinicably connected with the bottoms of the heating walls and the other group otsaid ILQPIHXTP tors being communicably connected with the tops of the heating walls; substantially as specified.

12. A verti al retort battery having retort chambers attenuated in horizontal section, heating walls constituted oi vertical coon bustioii lines each operable alternately for combustion in opposite directions, combined with regenerators disposed into groups al ternalini: res 'iectively with eaclrotlu-r and communicably connected with said combustion lines, the alternate groups being ai'lapted to operate as inflow groups when the intermediate groups operate ouillow groups and vice versa; substantially as specified.

13. A vertical retort battery having retort chambers attenuated in horizontal section, heating walls constituted of vertical co n-- bastion fines each operable alternately tor combustion in opposite directions, combined with regencrators disposed into groups alternating respectively with each other and communicabiy connected with said combustion tlues, the alternate groups being adapted to operate inflow groups when the in termediate groups operate outflow groups and vice versa, the regenerators when oper ating for inflow comprising both air and fuel gas regenerators; substantially as specified.

14. A vertical retort battery having retort chambers attenuated in horizontal section and contiguous vertically flucd heating walls disposed along its opposite sides, combined with regcnerators disposed in the interior of the battery structure between the opposite series of said retorts and heating walls, the i said regenerators when operating for inflow comprising both air and fuel gas regenerators; substantially as specified.

15. A vertical retort battery having retort chambers attenuated in horizontal section and contiguous vertically flued heating walls disposed along its opposite sides, combined with regenerators disposed in the interior of, the battery structure between the opposite series of said rctorts and heating walla; sub stantially as specified.

ltl. A battery structure for etl'eeting treatment of materials with extraneously developed heat, having vertically-heated walls contiguous to the space in which the material is treated, combined with regenerators located in a different region of the battery from the heating walls and at substantially the same level and disposed into groups alternating respectively with each other, said regenerators being communicably connected with the said vertically-heated walls, the alternate groups being adapted to operate as inflow groups when the ini'ermwliate groups operate as utflow groups and vice versu. substantiullv as specified.

IT. A regenerative retort. oven battery having a row ol' vertical retorts alternating; with vertically ilued heating walls, the fines of with heating wall being all operative concurrently in the same direction, combined with a series of rcgcncrators all located ina single row parallel. to at least one row of rctorts and heating walls.

is. regenerative retort oven battery having' a row of vertical retorts alternating with vertically tlued heating walls, the fines of each heating wall being all operative concuricntly in the same dircctitm. combined with a series of rcneneralois all located in a single row parallel to at least one row of retorts and heating walls, the regenerators being arranged in groups of which the alternate groups are connected at the tops of the fines and the other groups with the bottoms of the lines.

19. A regenerative retort oven battery lllil having a row of vertical retorts alternating with \crtically tluettheating Walls, the fines of each heating wall being all operative concurrently in the same direction, combined with a series of regenerators all located in a. single row parallel to at least one row of rctorts and heating walls, the regenerators being arranged in groups of which the alter nate groups operate tor inflow while the other groups til t'l'ttlt. tor outtlow.

20. In a vertical retort battery in combination: retort. chambers; h ating walls provided with time having their respective ends at dittcrent levels; regenerators connected by tlltcts with the top:v of the fines, and other rta -'cncrators on th ame le\el tonncctcd by ducts with the loltoms ot' the tluc--z and horizontal channel. di posed at lilierent levels tor connecting the HTS ol the regcnerators ot dill'cient groups with said ducts.

it. A regenerative vertical oven battery hayingtwo opposite rows of vertical ovens alternating with tlu'ed heating walls. combincd with a longitudinalrow ot' regenerators located between the aforesaid rows of ovens and heating Walls, wh reby at least one wall of each oven and at least one end of each heating wall is acces ible from a side wall of the batter structure; substantially as specified.

22. A regenerative vertical oven battery having two opposite rows 01' vertical ovens alternating with fitted treating walls coinbined with a longitudinal row of regenerators located between the a f()l0 ztltl rows of ovens and heating walls, whereby at least one wall of each oven and at least one. end of each heating wall is acrcssiltle from a side wall of the battery structure. certain of said regenerators being adapted to oper ate as intlow when others of said rcgcncia ators operate,v for outllow and vice versa; substantially as specitied.

333. A regenerative vertical oven battery having a row of vertical ovens alternating with tlucd heating walls, in which at least one wall ot' at-h oven and at least one end ot each treating wall is lot atcd at a side wall f the battery structure, combined with a row of rcgimr-ratois coinlnunicably connected with said heating walls and disposed so that the major vertical extent of the regenerators intersects horizontal levels of the heating walls and alternate ovens; substantially as specified.

it. A hatterv structure for distilling carbonaceous materials having di tilling chainbers and lined heating walls contiguous thereto the walls and chanilm'sbeiHg disosed in series along the opposite sides of the battery s ructure, combined with regenerators disposed in the inte ior of the structure between the opposite series of sai-f distilting chambers and heating walls, the respective regenerators being connected 'in common to the heating walls of the two series; bllllnttllltiillly as specified.

:25. A vertical retort battery structure comprising in combination; coking charm hers; fined heating walls contigtitms thereto; and regcnerators on one side of and on substantially the same level as said coking chanp hers and tlucd heating walls and communicahlv connected to the latter said structure being provided with an expansion joint ex tending into a rcgenerator chamber.

26. A vert cal retort battery structure comprising in combination: coking chambers; flued heating walls contiguous thereto;-

and regenvrators on one side oi saidreoking chainl'ers and lined heating walls and' homniunicably coninct'ed to the latter, said structure being provided with an expansion joint extending from the ends ot a rcgenerator chamber to the ()|!l)tl itl sides ot' the battery.

27. A vert'iral retort battery structure eomprisine' in combination: coking chambers; thu-d heatin; walls contiguous thereto; and regenerators on one -ltltF of said coking chambers and dried hcarine: walls and coninnmicablv connected to the latter, said structure being provided with an expansion joint separating certain ot' the regenerators from each other.

28. A vertical retort battery structure for di tilling cat-boon coils material having distilling chambers and tlued heating walls alternating therewith arranged in sets on opposite sides of the battery respectively; and rt-generators disposed between the opposite sets of sa d distilling chambers and heating walls. said structure being provided intermediate its ends with a transverseexpansion joint extending (ltt \\l. t of the battery and into a rcgenerator chamber.

2!). A vertical retort battery structure for distilling carbonaceous material having distilling chambers and lined heating walls alternating therewith arranged in scts on opposite sides of the battery resptwtivcly; and regenerators disposed between the opposite sets of said distilling chambers and heating walls, said structure being provided inter-- mediate its ends with a transverse expansion joint extending t1't) \Vl5d of the battery.

In testimony wln-rcot I- have hereunto set my hand.

JOSEPH my ACKERE N. 

